Data as of Nov 14, 2026
151.181.88.0/23
No anonymizer space · no proxy exits in 30 daysCrown Castle Fiber LLC · space held by Zayo Bandwidth
Announcements
Less specific
Covering announcements
| Prefix | Origin | Type | Proxy exits | Holder | RPKI |
|---|---|---|---|---|---|
| 151.181.64.0/19 since Dec 2018 | AS46887 | Internet provider | 18 3 always on | Zayo Bandwidth |
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 151.181.88.0/24 since Apr 2021 | AS17096 | Business | Zayo Bandwidth |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 151. | 16,384 | ZAYO-CCF-151-181-32-0 | Zayo Bandwidth (ZAYOB) · US | Direct Allocation | Dec 20, 2013 | abuse@ |
| └ 151.181.88.0/24 | 256 | NET-151-181-88-0-24 | Summit Racing (C06493062) · US | Reassigned | May 11, 2017 | abuse@ via ZAYO-CCF-151-181-32-0 |
A contact marked “via” is the registry's: the record names none of its own, so the registry hands down its parent's.
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
512 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Business | 256 | 50% | 1 | |
| Internet provider | 256 | 50% | 1 |
Network & registry
Origin network
AS46887
US
- Name
- Crown Castle Fiber LLC
- Type
- Internet provider
- Registered
- Apr 13, 2009
- Domain
- zayo.com
- Website
- www.crowncastle.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Covering aggregate above, the prefix's own history below
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2017
- Current origin since
- Sep 2021 · 5.2 yr
- Origin networks
- 2
- Last change of origin
- Sep 2021
Recorded history
History
- Handoffs
- 1
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS46887 | RADB | MAINT-AS27506 | Sep 3, 2025 |
Whois
Registration for this announcement
- Range
- 151.
181. 32. 0 - 151. 181. 95. 255 - Netname
- ZAYO-CCF-151-181-32-0
- Registrant
- Zayo Bandwidth
- Organization
- Zayo Bandwidth (ZAYOB)
- Org address
- 1401 Wynkoop St., Denver, CO, 80202
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-151-181-32-0-1
- Parent
- NET-151-0-0-0-0
- Created
- Dec 20, 2013
- RIR
- ARIN
- Country
- US
- Delegated
- Dec 20, 2013
- Status
- assigned
Report abuse
Abuse contact
- abuse@
zayo. com - Name
- Abuse
- Phone
- +1-866-236-2824
- Handle
- ABUSE5675-ARIN